Sarah Palin at the Iowa State Fair Aug. 12. (The Register/Rodney White)

Christine O’Donnell is off the guest list – again – and Sarah Palin has gone from a “maybe” to a “yes.”

In the latest episode in the drama over the speaking lineup for Saturday’s Tea Party of America rally in Iowa, organizer Ken Crow said Palin’s staff called this morning to say Palin’s appearance at the rally was “on hold” until three changes were made.

“They said, ‘Ken, can you take care of bing, bing, bing’ and I said, ‘Yessir, I will’ and I did,” Crow, an Indianola Republican told The Des Moines Register.

“Now I’m waiting to hear back.”

Later this afternoon, organizers said Palin’s staff confirmed she will indeed speak at the rally now that their requests have been addressed.

“I got a call from her staff and they said, ‘Ken we’re confirmed again,'” Crow told the Register this afternoon.

Crow said two of this morning’s requests were logistical details: Email a copy of the program today, and address concerns about back-stage security and who will be allowed in that area.

Asked about the third request, Crow said: “Can I let that remain private for now?”

Meanwhile, Crow telephoned staff for O’Donnell, a Delaware Republican who ran for the U.S. Senate, to say she can’t speak at Saturday’s event.

“We’re all friends and she’s not coming,” he said, referring to O’Donnell. “I found out some information that caused me to want to rescind the invitation.”

The schedule for the rally has been a whirlwind. The Tea Party of America, founded by two Iowans, invited O’Donnell, then uninvited her yesterday after getting hammered with emails criticizing her. Later yesterday, they reinvited her, citing her grace in dealing with being uninvited. Then Palin’s staff called this morning.